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(Should have been submitted with 693939) Fixing error value handling for numeric functions. Refactored hierarchy. 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@693941 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Josh Micich 2008-09-10 19:27:24 +00:00
parent ea1c2e1863
commit cd0a88ea0a
1 changed files with 303 additions and 85 deletions
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378
src/java/org/apache/poi/hssf/record/formula/functions/NumericFunction.java
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@ -1,98 +1,316 @@
/* /* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one or more Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0 The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0 http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and See the License for the specific language governing permissions and
* limitations under the License. limitations under the License.
*/ ==================================================================== */
/*
* Created on May 14, 2005
*
*/
package org.apache.poi.hssf.record.formula.functions; package org.apache.poi.hssf.record.formula.functions;
import org.apache.poi.hssf.record.formula.eval.AreaEval;
import org.apache.poi.hssf.record.formula.eval.ErrorEval; import org.apache.poi.hssf.record.formula.eval.ErrorEval;
import org.apache.poi.hssf.record.formula.eval.Eval; import org.apache.poi.hssf.record.formula.eval.Eval;
import org.apache.poi.hssf.record.formula.eval.EvaluationException;
import org.apache.poi.hssf.record.formula.eval.NumberEval;
import org.apache.poi.hssf.record.formula.eval.OperandResolver;
import org.apache.poi.hssf.record.formula.eval.ValueEval; import org.apache.poi.hssf.record.formula.eval.ValueEval;
import org.apache.poi.hssf.record.formula.eval.ValueEvalToNumericXlator;
/** /**
* @author Amol S. Deshmukh < amolweb at ya hoo dot com > * @author Amol S. Deshmukh < amolweb at ya hoo dot com >
*
*/ */
public abstract class NumericFunction implements Function { public abstract class NumericFunction implements Function {
protected static final double E = Math.E; static final double ZERO = 0.0;
protected static final double PI = Math.PI; static final double TEN = 10.0;
static final double LOG_10_TO_BASE_e = Math.log(TEN);
private static final ValueEvalToNumericXlator DEFAULT_NUM_XLATOR = protected static final double singleOperandEvaluate(Eval arg, int srcCellRow, short srcCellCol) throws EvaluationException {
new ValueEvalToNumericXlator((short) ( ValueEval ve = OperandResolver.getSingleValue(arg, srcCellRow, srcCellCol);
ValueEvalToNumericXlator.BOOL_IS_PARSED double result = OperandResolver.coerceValueToDouble(ve);
| ValueEvalToNumericXlator.REF_BOOL_IS_PARSED checkValue(result);
| ValueEvalToNumericXlator.STRING_IS_PARSED return result;
| ValueEvalToNumericXlator.REF_STRING_IS_PARSED
//| ValueEvalToNumericXlator.STRING_TO_BOOL_IS_PARSED
//| ValueEvalToNumericXlator.REF_STRING_TO_BOOL_IS_PARSED
//| ValueEvalToNumericXlator.STRING_IS_INVALID_VALUE
//| ValueEvalToNumericXlator.REF_STRING_IS_INVALID_VALUE
));
private static final int DEFAULT_MAX_NUM_OPERANDS = 30;
/**
* this is the default impl of the factory(ish) method getXlator.
* Subclasses can override this method
* if they desire to return a different ValueEvalToNumericXlator instance
* than the default.
*/
protected ValueEvalToNumericXlator getXlator() {
return DEFAULT_NUM_XLATOR;
} }
protected ValueEval singleOperandEvaluate(Eval eval, int srcRow, short srcCol) { private static final void checkValue(double result) throws EvaluationException {
ValueEval retval; if (Double.isNaN(result) || Double.isInfinite(result)) {
if (eval instanceof AreaEval) { throw new EvaluationException(ErrorEval.NUM_ERROR);
AreaEval ae = (AreaEval) eval;
if (ae.contains(srcRow, srcCol)) { // circular ref!
retval = ErrorEval.CIRCULAR_REF_ERROR;
} }
else if (ae.isRow()) {
if (ae.containsColumn(srcCol)) {
ValueEval ve = ae.getValueAt(ae.getFirstRow(), srcCol);
ve = getXlator().attemptXlateToNumeric(ve);
retval = getXlator().attemptXlateToNumeric(ve);
}
else {
retval = ErrorEval.VALUE_INVALID;
}
}
else if (ae.isColumn()) {
if (ae.containsRow(srcRow)) {
ValueEval ve = ae.getValueAt(srcRow, ae.getFirstColumn());
retval = getXlator().attemptXlateToNumeric(ve);
}
else {
retval = ErrorEval.VALUE_INVALID;
}
}
else {
retval = ErrorEval.VALUE_INVALID;
}
}
else {
retval = getXlator().attemptXlateToNumeric((ValueEval) eval);
}
return retval;
} }
public final Eval evaluate(Eval[] args, int srcCellRow, short srcCellCol) {
double result;
try {
result = eval(args, srcCellRow, srcCellCol);
checkValue(result);
} catch (EvaluationException e) {
return e.getErrorEval();
}
return new NumberEval(result);
}
protected abstract double eval(Eval[] args, int srcCellRow, short srcCellCol) throws EvaluationException;
/* -------------------------------------------------------------------------- */
// intermediate sub-classes (one-arg, two-arg and multi-arg
public static abstract class OneArg extends NumericFunction {
protected OneArg() {
// no fields to initialise
}
protected final double eval(Eval[] args, int srcCellRow, short srcCellCol) throws EvaluationException {
if (args.length != 1) {
throw new EvaluationException(ErrorEval.VALUE_INVALID);
}
double d = singleOperandEvaluate(args[0], srcCellRow, srcCellCol);
return evaluate(d);
}
protected abstract double evaluate(double d) throws EvaluationException;
}
public static abstract class TwoArg extends NumericFunction {
protected TwoArg() {
// no fields to initialise
}
protected final double eval(Eval[] args, int srcCellRow, short srcCellCol) throws EvaluationException {
if (args.length != 2) {
throw new EvaluationException(ErrorEval.VALUE_INVALID);
}
double d0 = singleOperandEvaluate(args[0], srcCellRow, srcCellCol);
double d1 = singleOperandEvaluate(args[1], srcCellRow, srcCellCol);
return evaluate(d0, d1);
}
protected abstract double evaluate(double d0, double d1) throws EvaluationException;
}
public static abstract class MultiArg extends NumericFunction {
private final int _minArgs;
private final int _maxArgs;
protected MultiArg(int minArgs, int maxArgs) {
_minArgs = minArgs;
_maxArgs = maxArgs;
}
protected final double eval(Eval[] args, int srcCellRow, short srcCellCol) throws EvaluationException {
int nArgs = args.length;
if (nArgs < _minArgs || nArgs > _maxArgs) {
throw new EvaluationException(ErrorEval.VALUE_INVALID);
}
double[] ds = new double[nArgs];
for(int i=0; i<nArgs; i++) {
ds[i] = singleOperandEvaluate(args[i], srcCellRow, srcCellCol);
}
return evaluate(ds);
}
protected abstract double evaluate(double[] ds) throws EvaluationException;
}
/* -------------------------------------------------------------------------- */
public static final Function ABS = new OneArg() {
protected double evaluate(double d) {
return Math.abs(d);
}
};
public static final Function ACOS = new OneArg() {
protected double evaluate(double d) {
return Math.acos(d);
}
};
public static final Function ACOSH = new OneArg() {
protected double evaluate(double d) {
return MathX.acosh(d);
}
};
public static final Function ASIN = new OneArg() {
protected double evaluate(double d) {
return Math.asin(d);
}
};
public static final Function ASINH = new OneArg() {
protected double evaluate(double d) {
return MathX.asinh(d);
}
};
public static final Function ATAN = new OneArg() {
protected double evaluate(double d) {
return Math.atan(d);
}
};
public static final Function ATANH = new OneArg() {
protected double evaluate(double d) {
return MathX.atanh(d);
}
};
public static final Function COS = new OneArg() {
protected double evaluate(double d) {
return Math.cos(d);
}
};
public static final Function COSH = new OneArg() {
protected double evaluate(double d) {
return MathX.cosh(d);
}
};
public static final Function DEGREES = new OneArg() {
protected double evaluate(double d) {
return Math.toDegrees(d);
}
};
public static final Function DOLLAR = new OneArg() {
protected double evaluate(double d) {
return d;
}
};
public static final Function EXP = new OneArg() {
protected double evaluate(double d) {
return Math.pow(Math.E, d);
}
};
public static final Function FACT = new OneArg() {
protected double evaluate(double d) {
return MathX.factorial((int)d);
}
};
public static final Function INT = new OneArg() {
protected double evaluate(double d) {
return Math.round(d-0.5);
}
};
public static final Function LN = new OneArg() {
protected double evaluate(double d) {
return Math.log(d);
}
};
public static final Function LOG10 = new OneArg() {
protected double evaluate(double d) {
return Math.log(d) / LOG_10_TO_BASE_e;
}
};
public static final Function RADIANS = new OneArg() {
protected double evaluate(double d) {
return Math.toRadians(d);
}
};
public static final Function SIGN = new OneArg() {
protected double evaluate(double d) {
return MathX.sign(d);
}
};
public static final Function SIN = new OneArg() {
protected double evaluate(double d) {
return Math.sin(d);
}
};
public static final Function SINH = new OneArg() {
protected double evaluate(double d) {
return MathX.sinh(d);
}
};
public static final Function SQRT = new OneArg() {
protected double evaluate(double d) {
return Math.sqrt(d);
}
};
public static final Function TAN = new OneArg() {
protected double evaluate(double d) {
return Math.tan(d);
}
};
public static final Function TANH = new OneArg() {
protected double evaluate(double d) {
return MathX.tanh(d);
}
};
/* -------------------------------------------------------------------------- */
public static final Function ATAN2 = new TwoArg() {
protected double evaluate(double d0, double d1) throws EvaluationException {
if (d0 == ZERO && d1 == ZERO) {
throw new EvaluationException(ErrorEval.DIV_ZERO);
}
return Math.atan2(d1, d0);
}
};
public static final Function CEILING = new TwoArg() {
protected double evaluate(double d0, double d1) {
return MathX.ceiling(d0, d1);
}
};
public static final Function COMBIN = new TwoArg() {
protected double evaluate(double d0, double d1) throws EvaluationException {
if (d0 > Integer.MAX_VALUE || d1 > Integer.MAX_VALUE) {
throw new EvaluationException(ErrorEval.NUM_ERROR);
}
return MathX.nChooseK((int) d0, (int) d1);
}
};
public static final Function FLOOR = new TwoArg() {
protected double evaluate(double d0, double d1) throws EvaluationException {
if (d1 == ZERO) {
if (d0 == ZERO) {
return ZERO;
}
throw new EvaluationException(ErrorEval.DIV_ZERO);
}
return MathX.floor(d0, d1);
}
};
public static final Function MOD = new TwoArg() {
protected double evaluate(double d0, double d1) throws EvaluationException {
if (d1 == ZERO) {
throw new EvaluationException(ErrorEval.DIV_ZERO);
}
return MathX.mod(d0, d1);
}
};
public static final Function POWER = new TwoArg() {
protected double evaluate(double d0, double d1) {
return Math.pow(d0, d1);
}
};
public static final Function ROUND = new TwoArg() {
protected double evaluate(double d0, double d1) {
return MathX.round(d0, (int)d1);
}
};
public static final Function ROUNDDOWN = new TwoArg() {
protected double evaluate(double d0, double d1) {
return MathX.roundDown(d0, (int)d1);
}
};
public static final Function ROUNDUP = new TwoArg() {
protected double evaluate(double d0, double d1) {
return MathX.roundUp(d0, (int)d1);
}
};
/* -------------------------------------------------------------------------- */
public static final Function LOG = new MultiArg(1,2) {
protected double evaluate(double[] ds) {
double logE = Math.log(ds[0]);
if (ds.length == 1) {
return logE / LOG_10_TO_BASE_e;
}
double base = ds[1];
if (base == Math.E) {
return logE;
}
return logE / Math.log(base);
}
};
} }